denigration vs deprecation

denigration and deprecation both are nouns.

Word	Noun	Adjective	Verb	Adverb
denigration	Yes	No	No	No
deprecation	Yes	No	No	No

As nouns, denigration and deprecation are synonyms defined as:

denigration and deprecation: the act of expressing disapproval (especially of yourself)

denigration (noun)	deprecation (noun)
the act of expressing disapproval (especially of yourself)	the act of expressing disapproval (especially of yourself)
an abusive attack on a person's character or good name	a prayer to avert or remove some evil or disaster
a belittling comment